Image device and operation method of image device

An operation method of an imaging device that includes an image sensor and an image signal processor, the image sensor including a pre-processing module, and the image signal processor including a calibration module and a compensation module, the method comprising:

• receiving, by the pre-processing module, a first raw image;
• and
• performing, by the pre-processing module, a remosaic operation on the first raw image to generate a second image associated with the first raw image, wherein a resolution of the second image associated with the first raw image is identical to a resolution of the first raw image;
• receiving, by the compensation module, a second image associated with a first raw image;
• loading, by the compensation module, calibration data, the calibration data including a code level difference of a first image and a second image for each of a plurality of colors by grid units;
• decoding, by the compensation module, the calibration data to generate a calibration image;
• and
• summing, by the compensation module, the second image associated with the first raw image and the calibration image to generate a compensated second image associated with the first raw image so that a color tone difference between a first mode and a second mode is compensated by the grid units.

An operation method of an imaging device, the method comprising:

• receiving, by a calibration module, a first image associated with a first raw image and a second image associated with a second raw image;
• generating, by the calibration module, a plurality of calibration data based on the first image associated with the first raw image and the second image associated with the second raw image, the plurality of calibration data including a code level difference of the first image associated with the first raw image and the second image associated with the second raw image for each of a plurality of colors by a grid unit;
• storing, by the calibration module, the plurality of calibration data in a memory;
• receiving, by a compensation module, a second image associated with a third raw image provided from a pre-processing module;
• loading, by the compensation module, the plurality of calibration data stored in the memory;
• decoding the plurality of calibration data to generate a calibration image;
• and
• generating a compensated second image associated with the third raw image so that a color tone difference between a first mode and a second mode is compensated by the grid unit, based on the calibration image and the second image associated with the third raw image,
• wherein said generating the plurality of calibration data comprises:
• calculating first sub-grid data associated with a first sub-grid among a plurality of first grids of the first image associated with the first raw image;
• calculating second sub-grid data associated with a second sub-grid among a plurality of second grids of the second image associated with the second raw image;
• and
• generating first calibration data among the plurality of calibration data based on the first sub-grid data and the second sub-grid data.